Island



(No Model.)

E. F. HAZARD & F. W. GREENHALGH. TENSION REGULATING DEVICE FOR LOOMSHUTTLEES. No. 346,912. Patented Aug. 10, 1886.

B A /A UNITED STATES EUGENE F. HAZARD AND FREDRIGK W. GREENHALGH, OFPEACE DALE, RHODE ISLAND.

TENSION-REGULATING DEVICE FOR LOOM-SHUTTLES.

SPECIFICATION forming part of Letters Patent No. 346,912, dated August10, 1886.

Application tiled October 25, 1885. Serial No. 180,936. (No model.)

To all whom it may concern:

Be it known that we, EUGENE F. HAZARD and FREDRIOK W. GREENHALGH, bothof Peace Dale, WVashington county, Rhode Island, haveinvented certainnew and useful Improvements in Tension Regulating Devices forLoom-Shuttles, of which the following is a specification,reierencebeinghad to the accompanying drawings, making part thereof.

The object of this improvement is to-provide a loom-shuttle with anelastic and adjustable tension-regulating device which, actingconstantly and uniformly, shall serve to keep the filling-yarns frompaying out too freely in weaving, and thereby becoming kinked andforming imperfections in thegoods.

Our invention consists in the devices and combination of devices setforth in the appended claim.

In the drawings, Figure 1 is a top plan of one end of a shuttle; andFig. 2, a transverse section on line was of Fig. 1, looking away fromthe spindle.

A is the shuttle-body, and B the bobbin on the spindle O.

D' is a spring-holder, preferably a metal casting, fitted into theconcavity at one end of the shuttle, between the tip of the spindle andthe lateral aperture through which the yarn Y is drawn. This casting isshown as secured in place by a screw, E.. In the sides of this casting Dtwo steel springs, F, are mounted, and held adj ustabl y by screws G G.The free ends of these springs approach eachv other and bear on theopposite sides of the yarn with such degree of pressure as is desired,regulated by the screws G, or by bending the springs more orless,without removal from the shuttle-body.

We prefer to broaden the springs at the tip .l

' cylindrical weight loosely held in a framecarried in the shuttle; butthis arrangement gives no uniform and constant pressure while in use,nor is the device at all adjustable. It also causes an objectionablerattling.

Our device is perfectly noiseless, bears with a uniform pressure bothwhile the shuttle is moving and when it is suddenly stopped, and thesprings can be adjusted to the yarn before the spring-holder is securedto the shuttlebody, and changed afterward as desired.

' This advantage has not been attained by any springtension deviceheretofore used in shut tles.

Having thus described ourimprovement in loomshuttles, we claim as ourinvention In combination, theshuttlebody,the springholder, the screw E,whereby it is removably secured therein, the plate springs, and thescrews G, whereby they are adj ustabl y secured to the spring-holder, asset forth. EUGENE F. HAZARD. FREDRIOK -W. GREENHALGH. WVitnesses:

HOWARD B. PERRY, JOHN G. PERRY.

It is

